could centre
Verbo regular: centre - centred- centred

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could centre
you could centre
he could centre
we could centre
you could centre
they could centre 	I could be centring
you could be centring
he could be centring
we could be centring
you could be centring
they could be centring	I could have centred
you could have centred
he could have centred
we could have centred
you could have centred
they could have centred	I could have been centring
you could have been centring
he could have been centring
we could have been centring
you could have been centring
they could have been centring	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I could not centre
you could not centre
he could not centre
we could not centre
you could not centre
they could not centre 	I could not be centring
you could not be centring
he could not be centring
we could not be centring
you could not be centring
they could not be centring	I could not have centred
you could not have centred
he could not have centred
we could not have centred
you could not have centred
they could not have centred	I could not have been centring
you could not have been centring
he could not have been centring
we could not have been centring
you could not have been centring
they could not have been centring	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I centre?
could you centre?
could he centre?
could we centre?
could you centre?
could they centre? 	could I be centring?
could you be centring?
could he be centring?
could we be centring?
could you be centring?
could they be centring? 	could I have centred?
could you have centred?
could he have centred?
could we have centred?
could you have centred?
could they have centred? 	could I have been centring?
could you have been centring?
could he have been centring?
could we have been centring?
could you have been centring?
could they have been centring? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
could I not centre?
could you not centre?
could he not centre?
could we not centre?
could you not centre?
could they not centre? 	could I not be centring?
could you not be centring?
could he not be centring?
could we not be centring?
could you not be centring?
could they not be centring? 	could I not have centred?
could you not have centred?
could he not have centred?
could we not have centred?
could you not have centred?
could they not have centred? 	could I not have been centring?
could you not have been centring?
could he not have been centring?
could we not have been centring?
could you not have been centring?
could they not have been centring?